package com.gpnu7_412.yanzhi.util;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.common.auth.CredentialsProviderFactory;
import com.aliyun.oss.common.auth.EnvironmentVariableCredentialsProvider;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import jakarta.annotation.PostConstruct;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.io.InputStream;

/**
 * 阿里云OSS工具类
 * @author ZZH
 */
@Component
public class AliOssUtil {

//    // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
//    private static final String ENDPOINT = "https://oss-cn-shenzhen.aliyuncs.com";
//    // 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
//    private static final String ACCESS_KEY_ID = "LTAI5t7TpJiXYasPsPZU1d96";
//    private static final String ACCESS_KEY_SECRET = "PXL6KFAJzzClniLnux9vSvoFRLv20U";
//    // 填写Bucket名称，例如examplebucket。
//    private static final String BUCKET_NAME = "yanzhi-bucket";

    private static String ENDPOINT;
    private static String ACCESS_KEY_ID;
    private static String ACCESS_KEY_SECRET;
    private static String BUCKET_NAME;

    @Value("${aliyun.oss.endpoint}")
    private String endpoint;
    @Value("${aliyun.oss.access-key-id}")
    private String accessKeyId;
    @Value("${aliyun.oss.access-key-secret}")
    private String accessKeySecret;
    @Value("${aliyun.oss.bucket-name}")
    private String bucketName;

    @PostConstruct
    public void init() {
        ENDPOINT = this.endpoint;
        ACCESS_KEY_ID = this.accessKeyId;
        ACCESS_KEY_SECRET = this.accessKeySecret;
        BUCKET_NAME = this.bucketName;
    }

    public static String uploadFile(String objectName, InputStream inputStream) throws Exception {

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(ENDPOINT, ACCESS_KEY_ID, ACCESS_KEY_SECRET);

        String url = "";

        try {
            // 创建PutObjectRequest对象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(BUCKET_NAME, objectName, inputStream);

            // 如果需要上传时设置存储类型和访问权限，请参考以下示例代码。
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);

            // 上传
            PutObjectResult result = ossClient.putObject(putObjectRequest);
            url = "https://" + BUCKET_NAME + "." + ENDPOINT.substring(ENDPOINT.lastIndexOf("/") + 1) + "/" + objectName;
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
        return url;
    }

    public static void deleteFile(String objectName) throws Exception {
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(ENDPOINT, ACCESS_KEY_ID, ACCESS_KEY_SECRET);

        try {
            // 删除文件或目录。如果要删除目录，目录必须为空。
            ossClient.deleteObject(BUCKET_NAME, objectName);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}
